Ratte and Andreasen's map of the Jabal Sawdah was part of the pioneering project to a complete geological and geographical survey of Saudi Arabia. The project was a collaboration between the Saudi Arabian Government and the U. S. Geological Survey. These maps form the basis for all modern maps of the Kingdom and are amongst the most important maps of the area ever produced. The Jabal Sawdah Quadrangle is the south of the Kingdom and includes the highest peak in Saudi Arabia, Jabal Sawda (2800 mtres).

First edition. Folding lithographed map, 84 x 73 cm., original 8-page text brochure, original printed buff paper slipcase, map and slipcase dual language, Arabic and English, map fine, light wear to slipcase, a very good example.